You know, I've never really thought how a fan oscillates. It's never occurred to me to ponder for a second the way it moves and does its fan thing. But now I can't stop watching this magical GIF explanation. So fascinating.
This was originally shown on Japanese educational television. Educational, it is!
こういう「仕組み」がわかるGIFとか画像あげてけ [Hayabusa]
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